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In response to the increasing damage and disease threats posed by expanding feral swine populations in the U.S., Congress appropriated funds to APHIS in 2014 to create a collaborative National Feral Swine Damage Management Program. The program’s overarching goal is to protect agricultural and natural resources, property, animal health, and human health and safety by managing feral swine damage. APHIS collaborates with many stakeholders—including States, Tribes, other Federal agencies, universities, and the public—to accomplish this goal.
See related resource: Squeal on Pigs!

All known feral swine have been eliminated from Colorado thanks to a near 15-year state and federal partnership comprised of the U.S. Department of Agriculture’s (USDA) Animal and Plant Health Inspection Service (APHIS) Wildlife Services (WS), the USDA Forest Service (FS), Colorado Parks and Wildlife (CPW) and the Colorado Department of Agriculture (CDA). The partnership formed in the early 2000s as a task force to manage invasive feral swine, which root up crops and pastures causing billions in damage nationwide each year. Feral swine also spread disease to livestock, wildlife and humans. Ground-nesting birds and other wildlife are easy prey for feral swine. And the swine put native wildlife at risk by competing for resources and destroying habitats and ecosystems. 

You can help keep Colorado free of feral swine:

• Spread the word that in Colorado it’s illegal to possess, transport or release feral swine, wild swine species or hybrids.
• Report sightings of feral swine or transportation activities to USDA Wildlife Services at 1-866-4-USDA-WS (1-866-487-3297) or Colorado Parks and Wildlife at 303-297-1192.
• Get more information at the National Feral Swine Damage Management Program.

Feral swine have recently invaded parts of the Northwest. They have been invading southwestern and central Oregon since 2004 and were first detected in Washington in 2016. Idaho has not seen significant numbers of feral swine, however migrating pigs may pose a threat. The population growth potential of feral swine is closely associated with food availability, which is becoming more abundant year-round due to warmer winter conditions... Projected increases in extreme events and average summer temperatures in the region are not expected to negatively impact the success of feral pigs. In response, timely population control measures are necessary to avoid damage to crops, forests, and rangelands.

Feral swine—also known as wild pigs, wild boars, wild hogs, and razorbacks—are descendants of escaped or released pigs first brought to the United States by Europeans as a food source. Learn how to identify feral swine and view distribution maps for the Unites States.  Read about managing risks and the damage caused by feral swine. 

See also: Weed Field Guides for more species

Japanese stiltgrass (Microstegium vimineum), also called Nepalese browntop, is an aggressive invader of forest lands throughout the eastern United States. Infestations can impact the diversity of native species, reduce wildlife habitat, and disrupt important ecosystem functions. Stiltgrass is considered one of the most damaging invasive plant species in the United States. Infestations spread rapidly and the seed can remain viable in the soil for up to five years. Correct identification is necessary before beginning any management activities. Fortunately, Japanese stiltgrass has a unique combination of characteristics that make field identification possible. This publication gives simple descriptions and clear pictures of these characteristics along with details on how to distinguish several common look-a-like species. Download the full PDF version of ANR-1457, the Field Guide to The Identification of Japanese Stiltgrass with Comparisons to other Look-a-like Species  [PDF,  16.1 MB].

See also: For more information about Invasive Tree Pests (insects and diseases) that are not native to Missouri

See also: Invasive and Problem Plant Control (scroll to Invasive Plants section) for more information to help you identify and control most common invasive plants in Missouri